switch to only push to dev when merging to dev, update workflow-dispa…

[jyang-broad]

switch to only push to dev when merging to dev, update workflow-dispatch to report test results

<your comments for this PR go here>

Have you read CONTRIBUTING.md lately? If not, do that first.

I, the developer opening this PR, do solemnly pinky swear that:

• I've followed the instructions if I've made any changes to the API, especially if they're breaking changes
• I've updated the RC_XXX release ticket with any manual steps required to release this change
• I've updated the FISMA documentation if I've made any security-related changes, including auth, encryption, or auditing

In all cases:

• Get two thumbsworth of review and PO signoff if necessary
• Verify all tests go green
• Squash and merge; you can delete your branch after this unless it's for a hotfix. In that case, don't delete it!
• Test this change deployed correctly and works on dev environment after deployment

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b5e9993) 69.34% compared to head (51f82de) 69.34%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1265   +/-   ##
========================================
  Coverage    69.34%   69.34%           
========================================
  Files           97       97           
  Lines         3402     3402           
  Branches       372      372           
========================================
  Hits          2359     2359           
  Misses        1043     1043           

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[davidangb]

thank you!